Abstract
An optimization of coagulation and flocculation of kaolin suspension by a newly synthesized quaternized oil palm empty fruit bunch cellulose denoted as a 9QC was investigated using the central composite design of the response surface methodology. The influences of coag-flocculant dosage, pH, and kaolin suspension on turbidity removal efficiency and sludge volume index responses were studied and assessed according to a 23 full factorial design. The developed quadratic models revealed that the overall optimum values to obtain the highest performance of the responses were 62.5 mg/L of coag-flocculant dosage, pH 7, and 1400 mg/L of kaolin concentration. The predicted optimum responses were found to be in close proximity to the observed responses. The coag-flocculating of river water using 9QC carried out at the optimum values showed encouraging results as compared to alum which is commonly used in drinking water treatment process.
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Acknowledgments
The financial supports from: the Ministry of Higher Education (MOHE), Malaysia for the MyBrain15 scholarship, and the Ministry of Science, Technology and Innovation (MOSTI), Malaysia, for the eScience Fund (Project No. 03-01-06-SF114/4S071) are gratefully acknowledged. The technical supports from the Syarikat Air Johor (SAJ) Sdn. Bhd. (Johor, Malaysia) and Indah Water Konsortium (IWK) Sdn. Bhd. (Kuala Lumpur, Malaysia) are also gratefully acknowledged.
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Mohtar, S.S., Tengku Malim Busu, T.N.Z., Md. Noor, A.M. et al. Optimization of coag-flocculation processes of a newly synthesized quaternized oil palm empty fruit bunch cellulose by response surface methodology toward drinking water treatment process application. Clean Techn Environ Policy 19, 191–204 (2017). https://doi.org/10.1007/s10098-016-1221-0
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DOI: https://doi.org/10.1007/s10098-016-1221-0